Blog
The Bertrand expert blog was created so that we can share with you our knowledge and many years of experience in the window industry. Articles containing professional advice from our experts appear regularly here. To learn more about what you should pay attention to when choosing doors or how to properly install windows, just follow the blog.
We are probably the first company in Poland to introduce wooden-aluminium windows to our offer. Why is this product gaining popularity?…
Bertrand returned to the company after a year. The employees welcomed him as "one of their own". He is coming back to us in a new role, but this...
Fogging windows is a common problem that occurs especially in autumn and winter. It is caused by the temperature difference between the inside of the room…
Did you know that millions of birds die every year from collisions with building windows? The problem is growing, especially in cities with…
Summer is in full swing and that means more time spent outdoors, relaxing on the terrace or balcony. So that these…
We are pleased to announce that our offer now includes the latest aluminum systems from Cortizo. They combine modern technology with…
What types of glass are available on the market? The answer is very simple: there are a lot of them and the customer definitely has…
Wooden windows can impress with their aesthetics and natural look. However, it is worth knowing that their maintenance requires a proper approach…
Real heroes don't wear capes. Although this is quite a cliché, it is so true in this case...
Clean windows are the showcase of every home, but cleaning them streak-free can be a challenge. That's why we've prepared proven methods for you, thanks to…
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